TY  - BOOK
TI  - AN INTRODUCTION TO FORMAL LANGUAGES AND AUTOMATA : SIXTH EDITION 
SN  - 978-93-84323-21-9
AV  - QA267.3 L56 2023 
PY  - 2017///
CY  - NEW DELHI 
PB  - JONES AND BARLETT LEARNING 
ER  -